Machine for making hose



Patented May 30, I899.

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(No Model.)

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Patented May '30, I899.

B. 0. HALE.

MACHINE FOR MAKING HOSE.

(Application filed Apr. 28, 1898.)

..|l||||IIIIIIIIl||I|Il No. 625,95l.

(No Model.)

I I I I I I l l .1 n H I Mn - INVENTOR' WITNESSES Patented May 30,1899. B. o. HALE.

MACHINE FOR MAKING HOSE.

(Application filed Apr. 28, 1898.) (No Model.)

5 Sheets-Sheet 3.

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I IH' ZQQ/J, 060M415 fiw T: mums PiTERS 0a., WOYO-LIYNQ. WASHINGTON. a. c.

Patented May 30, I899.

No. 625,95l.

B. 0. HALE. MACHINE FOR MAKING HOSE.

(Application filed Apr. 28, 1898.)

5 Sheets-Sheet 4.

INVENTOR M Q mo-urns wnsalncwon n c Patented May 30, I899.

N'o. 625,95l. I

B. 0. HALE. MACHINE FOR MAKING HOSE.

(Application filed Apr. 28, 1898.)

5 Sheets-Sheet 5 (No Model.)

m: mums FEVER! 00.. mrmnno. wAsnmtn'nu, n. c.

UNITED STATES PATENT Cl nic's.

BERNARD O. HALE, OF ANSONIA, CONNECTICUT, ASSIGNOR TO THE FARREL FOUNDRY AND MACH'INE COMPANY, OF SAME PLACE.

MACHINE FOR SPECIFICATION forming part 'of Letters Patent No. 625,951, dated May 30, 1899.

Application filed April 28, 1398- To all whom it may concern.- I

Be it known that 1, BERNARD O. HALE, a citizen of the United States, residing at Ansonia, county of New Haven, State of'Connecticut, have invented a new and useful Machine for Making Hose, of which the fol-. lowing is a specification.

My invention relates to the manufacture of flexible hose or tubing, and has for'its object' to produce a machine for rolling lengths of hose while on a mandrel in any of the operations comprised in the manufacture of any. style or size of flexible hoseas, for example, in wrapping and calendering the lengths of hosethe special object of my present in ven-f tion being'to simplify and cheapen the con-I struction of the machine and to greatly improve its operation in use, the machine as awhole being simple, strong, and durable} compact in arrangement, and requiring comparatively little room, as all overhead mechanism for raising and lowering the upper roll is dispensed with.

With these ends in viewmy invention consists, in substance, in the. construction and combination of parts, as hereinafter fully described and then pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure l is a side elevation of the machine complete; Fig. 2,, an enlarged side elevation of the left end of the machine as seen in Fig. 1; Fig. 3, an endv elevation as seen from the left inFigs. l and 2, a length of hose on a mandrel being shown between the rolls; Fig. 4, a section on the line 00 at in Figs. 1 and 2, the position of the parts corresponding with Figs. 1, 2, and 3,. the front table being at its lowered position and the rear table at its operativei-. e., anintermediate position; Fig. 5, a section onv the line y y in Fig. l, the tables being in the same horizontal plane-1'. 6., the front table; being at its raised position and the rear table at its lowered position; Fig. '5,-a detail View illustrating a form of locking devicefor rev taining the lower rolls in position after ad' justment; Fig. 6, an enlarged sectional view illustrating the construction of the upper roll and the mode in which it is mounted; Fig. 7, an end elevation of one of the'brackets which Serial No. 679,117. (No model.)

carry the sections of which the upper roll is composed, the roll being removed, so as to show The supplemental roll and one'of the antifriction-rollers; and Fig. 8 is a diagrammatic view illustrating the operation of the cams by which the front and rear tables are raised.

1 denotes framework, which I have shown as consisting of a series of independent standards which may or may not be connected in any suitable manner, as preferred.

2 denotes a shaft extending the length of the machine, to which power is applied by a belt (not shown) passing overapulley 3, fixed to saidshaft. 4 is an idler belt-pulley mounted on said shaft, and 5 a belt-shifter by which the belt may be shifted from pulley 3 "to pulley 4, and vice versa.

6 denotes a pulley, mounted on shaft 2 and turning freely thereon, whose hub 7 carries va pinion 8, meshing with a'gear-wheel 0,

mounted on a stud 10, extending "from a bracket 11, which is itself rigidly secured to one of the standards 1. The hub 12 of this gear-wheel carries 'a pinion 13, meshing with an idler gear-wheel 14, mounted on a stud 15, also extending from bracket 11, which in turn meshes with a gear-wheel 16, mounted on a stud 17, which is supported by bracket 11 and by the standard to which said bracket is secured.

18 denotes the upper roll, the construction and operation of which will presentlybe fully described, and 19 and 20 the front and rear rolls, respectively. Gear wheel 16 meshes with pinions 21 and 22, which are rigidly so cured to the front and rear rolls, respectively, said pinions being, for the purpose of conven ience, of less diameterthanthe rolls,as clearly shown in Figs. 2 and 3. The trunnions 23 of the front and rear rolls are'journaled, respectively, in arms 24 and 25, which are themselves pivoted on stud 17. It should be noted that arms 24 and 25 are adapted to be oscillatedin arcs of a circle of which stud 17 is the center, so that oscillation of said arms will move the rolls toward or from each other, as will presently be fully described. The pinions carried by said rolls and by which they are driven rotate in the same-direction IOO and remain constantly in mesh with gearwheel 16. I have shown but one pair of arms 21 and 25 and have shown but one end of the front and rear rolls as provided with trunnions and bearings therefor, said rolls being supported in a manner which I shall presently describe. If preferred, however, additional pairs of arms 21 and 25 may be provided at the other end of the machine and at one or more intermediate points, the length of the machine in practice being ordinarily from fifty to sixty feet.

The front and rear rolls are driven by means of a belt (not shown) passing over belt-pulley 6. I contemplate providing a special belt for pulley 6, so that the front and rear rolls will be constantlyin rotation. It is not essential, however, that these rolls should be rotating while the tables are being manipulated, as will presently be apparent. If preferred, therefore, a single belt may be used on pulleys 3, 1, and (3, and the belt-shifter may be arranged to shift the belt from either operative pulley to the idler-pulley, and vice versa. 26 (see Figs. 3 and 1) denotes a mandrel which carries the length of hose that is being operated upon, 27 a length of rubber or other tubing which is drawn over the mandrel, and 28 a covering therefor. In use the mandrel and hose rest upon the front and rear rolls, and the required amount of pressure thereon is applied by the upper roll, as will be fully explained. The weight of the front and rear rolls is supported by fixed idler or antifriction rollers 29, which are mounted on the studs 17 (see Figs. 4 and 5 and dotted lines in Fig. 2) and upon rollers 30, carried by front and rear arms 31 and 32, said arms being pivoted and turning freely on studs 17 and serving as additional supports for the said frontand rear rolls. It should be noted that each of the standards 1 carries a stud 17 and front and rear arms 31 and 32, although but one of these standards, as shown in the drawings, carries a bracket 11, and the arms 21 and 25 are not duplicated at the other standards. It should also be noted that the arms 31 and 32 are adapted to be oscillated in arcs of circles of which the studs 17 are the centers, so that the rollers carried by said arms may be swung toward orfrom each otherand will thereby cause front and rear rolls 19 and 20 to move toward or from each other over the periphery of the idler or antifriction rollers 29. Arms 31 and 32 are shown in the drawings as made substantially Tshaped, the extensions opposite to those carrying rollers and which I have designated by 33 being adapted to bear upon cams 31 on a shaft 35, extending the length of the machine. In the present instance I have shown these extensions as carrying antifriction-rollers 36, which are engaged by the cams to oscillate the arms, and thereby adjust the front and rear rolls. In the drawings I have shown arms 31 and 32 as placed on opposite sides of the standards, the cams 34, which are disks placed eccentrically 011 the shaft, being placed opposite to each other, so that oscillation of shaft 35 will either raise or lowerarms 31 and 32 simultaneously, thereby moving the front and rear rolls 1!) and 20 toward or from each other. Cam-shaft 35 may be oscillated to 'raise and lower arms 31 and 32 and adjust the front and rear rolls by means of a crank 37.

38 is an arcshaped plate which I have shown as bolted to the standard at the extreme right of the machine. (See Fig. 1 in connection with Figs. 5 and 5.) This arc-shaped plate is inclosed by a loop or strap 3.) on the crank, and the crank islocked at any desired position after adjustment by means of a setscrew 40, which passes through the loop or strap and engages the arc-shaped plate, as is clearly shown in Fig. 5.

7 0 denotes the front table, and 71 the rear table. The front table rests on sliding brackets 41 and the rear table on sliding brackets 42. These brackets are provided with ribs or flanges 13, which slide in ways 4A on the standards. 15 denotes shafts journaled in standards l transversely to the machine. Each of these standards carries at its mid-length a worm-wheel 16, which engages a worm -17 on shaft 2. The front end of each shaft 45 carries a cam 48, and the rear end of each shaft carries a cam 49. Sliding brackets 11 and 12 .are shown as provided with rollers 50, which bear upon these cams, so that rotation of shafts 45 will act to raise and lower the tables, .it being understood, of course, that these cams are so laid out as to time the movements of the tables in accordance with the require ments of the machine, as will be more fully explained. The weight of the tables and the sliding brackets by which they are supported is amplysuliicient to retain rollers closely in contact with the cams. that the pressure of the upper roll (which is carried by the rear table, as will be more fully explained) upon the length of hose that is being operated upon may be greatly increased, if desired, I provide springs 72, the ends of which are connected, respectively, to sliding brackets 42 and to standards 1. In practice all or any number of these springs may be connected to or disconnected from the sliding brackets, thus enabling me to cause the upper roll to bear upon the hose with any desired amount of pressure. The movements of the tables are controlled by meansof a rod 51, which extends the length of the machine, so that no matter where the operator may be standing he can start or stop the table-operating mechanism in an instant. This rod passes through eyes 52 011 the brackets 41, and the left end thereof, as seen in Figs. 1 and 2, is pivoted to a link 53, the opposite end of which is pivoted to a rock-shaft 54, mounted in a bracket 55, carriedby stud 10.

56 is a collar on the rock-shaft, which holds it in operative position, and 57 is a hub at the In order, however,

lower end thereof, from which extends an arm 58, to which belt-shifter 5 is pivoted. It will be readily understood from Fig. 3 in connection with Fig. 2 that no matter in what position the front table may be movement of rod 51 in either direction will oscillate the rock-shaft and will shift the belt (not shown) from one of the pulleys to the other, the outer end of link 53 rising and falling with the rod and the brackets.

It is an important feature-of my present machine that all overhead mechanism is dispensed with and that upper roll 18, by which pressure is exerted upon the length of hose that is being operated upon, is carried by the brackets 42, which support the rear table. The manner in which the upper roll is constructed and mounted in sliding brackets 42 will be clearly understood from Figs. 6 and 7 in connection with Figs. 1 and 2. The upper roll is, in fact, made in sections, as clearly shown in Figs. 6 and 7. At the front of each bracket 42 is a head 59, the opposite faces of which are turned down at the edges, leaving central bosses or projections 60. At the ends of the sections of the roll are circular flanges 61, which form sockets to receive the bosses or projections 60. In the under side of each head 59 is a socket 62, which receives a supplemental roll 63, having trunnions 64, and at each side ofthese sockets are slots 65, which receive the trunnions. The independent sections of which the roll iscomposed are connected together by means of bearing-studs 66, which pass through heads 59 and enter the ends of the sections of the rolls, to which they are rigidly secured, as bypins 67. Sockets 62 and slots 65 extend inward from the outer faces of the heads to the central openings 68 in the'heads, through which the bearing-studs pass freely. 69 denotes antifriction-rollers lying between trunnions 64 and the bearingstuds 66. In use the length of hose that is being operated upon is rotated by the front and rear rolls and in turn imparts rotation to the top roll, the sections of which the top roll is composed and the bearing-studs which unite the sections together rotating in one piece. It is essential, however, that the pressure upon all parts of the length of hose that is being operated upon shall be uniform. This result I accomplish by the use of supplemental rolls 63 in the heads, the ends of which meet the ends of circular flanges 61 on the sections of the upper roll, as will be clearly seen in Fig. 6, so that while the roll proper, or

the sections of which it is composed, does not bear upon the hose at the heads precisely the same effect upon the hose is produced by the supplemental rolls, which are socketed in the heads. These supplemental rolls receive motion from bearing-studs 66 through antifriction-rollers 69, which engage the bearingstuds and also the trunnions 64 of. rolls 63, the relative diameters of the parts being such as to give to the rolls 63 the same surface speed as the upper roll itself. In practice the top roll and the supplemental rolls turn in the same direction and with the same surface speed, thus forming a continuous rolling surface in contact with the length of hose that is being operated upon.

The operation is as follows: The lengths of hose to be operated upon are placed on mandrels in any suitable manner, it being of course wholly immaterial so far as my present invention is concerned upon what grade or size of hose the machine is required to opcrate. At the moment of starting suppose the front and rear tables to be at any position except the one desired. An operator by means of rod 51 shifts the belt from pulley 4 to pulley 3, thus imparting rotation to shaft 2 and by means of the worms and wormwheels to the transverse shafts 45, which carry the cams 48 and 49, by which the tables are raised and lowered. This movement is continued until the front table is at its lowered position and the rear table at its raised position. This position of the parts is not shown in any of the figures of the drawings; but the position of rollers 50 in the brackets which carry the tables relative to the cams 48 and 49, by which the tables are raised and lowered, will be understood from the diagrammatic view, Fig. 8, in which the positions of the rollers relative to the cams at the instant the front table is at the lowered position and the rear table at the raised position are indicated, respectively, by c and a] At this instant the rollers 50 which carry the front table are in engagement with the low portions of cams 48, which I have indicated specifically by 48, and the rollers 50 which carry the rear table are in engagement with one of the high portions of cams '49, which I have indicated specifically by 49. When the parts have reached this position,

an operator by means of rod 51 stops the movement of the cams, leaving the tables stationary. The operators now place a mandrel, with a length of hose thereon, upon table 70 and roll it forward until it rests upon the front and rear rolls 19 and 20, these rolls hav ing been previously adjusted to accommodate the special size of hose that is to be operated uponby means of cams 34 and the mechanism o'peratingin connection therewith. As already stated, the front and rear rolls may or may not be kept continuously in rotation. Preferably, however, they are kept continuously in rotation, so that as soon as a length of hose upon a mandrel is rolled forward so that it will rest upon these rolls, as in Figs. 3 and 4, rotation will be immediately imparted to the hose. As soon as a length of hose has been .placed in position to be operated upon an operator by means of rod 51 again starts the table-operating mechanism, the movement 'of the cams being allowed to continue until the rollers'50 which carry the rear table have passed off from cams 49-in other words, un-

IIO

til the rollers 50 which engage cams 49 have passed from the relative position in Fig. 8 indicated by a to the relative position indicated by b, in which position the table-operating mechanism is again stopped to permit operations to be performed upon the hose. It will be readily understood from Fig. 8 that while the rollers 50 by which the rear table is carried have passed from the position indicated by a off from the cams-that is, toward the position indicated by bbut slight change will have taken place in the position of the rollers by which the front table is carried from the relative position indicated by e. This position of the parts is clearly shown in Figs. 3 and 4, the rear table, the brackets by which it is carried, and the upper roll being wholly unsupported except by the length of hose upon the mandrel, and it the pressure of these parts upon the hose is not sufiicient the pressure may be increased by means of springs 72, as already explained. While the parts are in this position, the length of hose being rotated by the rolls and being subjected to pressure, as described, the required operation or operations are performed upon the hosefor example, if the hose is to be wrapped the strips of covering material are applied and wound spirally thereon. The strips of covering material are ordinarily covered with cement, and as they are applied are pressed and cemented tightly to the hose by the action of the rolls. The second layer of covering material is usually wound spirally in the opposite direction. Any number of layers of covering material may be applied, after which the hose is ordinarily finished by a straight strip of covering material which is covered with cement and applied to the hose longitudinally and then rolled and cemented tightly upon the hose in the same manner as the spiral covering-strips. XVhen the operation or operations upon the hose are completed, the table operating mechanism is again started. \Vhen the rollers 50 which carry the rear table are in the position relative to cams 49 indicated by c and the rollers 50 which carry the front table are in the position relative to cams 48 indicated by f, the front table will still be at its lowered position, but ready to commence to rise, and the rear table will be a second time at the raised position, but nearly ready to commence to descend again. In other words, the rollers 50 which carry the front table will still be in engagement with the lower portions of cams 48, which I have indicated specifically by 48, and the rollers 50 which carry the rear table will have engaged the rounded shoulders .of cams 49, which I have indicated specifically by 49", and will have passed upon the second high portions of. cams 49, which I have indicated specifically by 49. By lengthening the arcs'of the second high portions 49 of cams 49 I increase the length of time during which the rear table will remain the second time at the raised position, as will be apparent from diagrammatic Fig. 8, during which time, it will also be apparent from said figure, there will be no upward movement of the front table. This enables the operators, if they so desire, to roll the length of hose that has been operated upon out from between the front and rear rolls and upon the front table without stopping the machine. An instant later the rollers 50 which carry the front table commence to rise upon cams 48, the inclines of said cams which produce the rising move ment of the front table being indicated specifically by 48, and the rollers 50 which carry the rear table will pass off from the high portions of cams 49,.which I have indicated specifically by 49, and will travel down the inclines of said cams, which I have indicated specifically by 49. This movement of the tables is allowed to continue until the tables are parallel with each other, as indicated in Fig. 5-that is, the front table will have reached the extreme of its upward movement and the rear table will have reached the extreme of its downward movement. hen the tables are in this position, the rollers 50 which carry the rear table will be in the position relative to cams 49 which I have indidicated by d and the rollers 50 which carry the front table will be in the position relative to cams 48 which I have indicated by g. In other words, the rollers 50 which carry the rear table will be in engagement with the low portions of cams 49, which I have indicated specifically by 49, and the rollers 50 which carry the front table will be in engagement with the high portions of cams 48,which I have indicated specifically by 48. \Vhen the parts are in this position, the table-operating mechanism may or may not be stopped. The op erators, if they so desire, may roll the length of hose which has been operated upon off from the front table and upon the rear table, as indicated by dotted lines in Fig. 5, without stopping the machine. An instant later the rollers 50 which carry the front table will pass oif from the high portions of cams 48, which I have indicated specifically by 48, and will travel down the inclines of said cam s, which I have indicated specifically by 48 that is, from the position relative to said cams indicated by 9 toward the position relative to said cams indicated by e-and the rollers 50 which carry the rear table will commence to rise upon earns 49, the inclinesof said cams which produce this rising movement of the rear table being indicated specifically by 49that is, the rollers which carry the rear table will pass from the position relative to cams 49 indicated by 61 toward the position relative to said cams which I have indicated by a. This movement of the table-operating mechanism is allowed to continue until the parts are again in the position they occupied when the first length of hose to be operated upon was rolled to the operating position 'i. 0., resting upon the front and rear rolls 19 and 20. The front table will now have ICC position relative to cams 49 which I have in-' dicated by a, said rolls being in engagement with the high portions of said cams, which I have indicated specifically by 49. When the parts reach this position, the movement of the table-operatin g mechanism is stopped and another length of hose upon a mandrel is placed upon the front table, as already dc scribed, and is rolled forward until it rests upon front and rear rolls 19 and 20. The tableoperating mechanism is then started again and the movementcontinued until the rollers 50 which carry the rear table have passed off from the high portions of cams 49, which I haveindicated specifically by $9, and the entire weight of the upperroll, the rear table, and the brackets by which it is carried is resting upon the length of hose that is being operated upon, the position of the rollers 50 which carry the rear table relative to cams 49 at this moment being indicated by b.

- These movements of the machine may be repeated indefinitely, each length of hose after being operated upon being rolled first upon the front table when the latter is at the extreme of its downward movement and the rear table at the extreme of its upward movement, after which, when the front table has reachedjhe extreme of its upward movement and the rear table the extreme of its downward movement, the tables being then parallel with each other, the length of hose that has been operated upon is rolled from the front table over upon the rear table, where the lengths of hose that have been operated uponmay rest until otherwise disposed of.

' Should it be required at any time to operate upon another size of hose, an operator simply loosens thumb-screw 40 (see Fig. 5*) and by means of crank 37 oscillates shaft 35, carrying cams 34:, which in turn engage front and rear arms 31 and 32, carrying rollers 30, and oscillate said arms in arcs of a circle. The rollers 30 form, in connection with idler or antifriction rollers 29, the supports upon which the front and rear rolls 19 and 20 rest. By moving the rollers 30, carried by the respective arms 31 and 32, toward-each other it is obvious that the front and rear rolls 19 and rear rolls 19 and 20 will roll away frpm each other over the peripheries of the idler or antifriction rollers 29, thereby placing said rollers in position to support a larger size of hose or tubing.

Having thus described my invention, I claim- 1. In a hose-making machine, the combination with a vertically-movable upper roll, of front and rear rolls to support the hose beneath said upper roll, supporting-rollers for said front and rear rolls beneath the latter and intermediate thereof so as to support both rolls, additional supports outside of said front and rear rolls, said supports being pivoted concentrically, with said rollers, and means for adjusting said supports in arcs of a circle to change the relative positions of said front and rear-rolls.

2. In a hose-making machine, the combination with a vertically-movable upper roll, of

front and rear rolls to support the hose, idler I rollers lying beneath and between said rolls so as to support both rolls, oscillating arms provided with rollers which bear against said front and rear rolls and form additional supports therefor, and means for adjusting said arms so as, to move the said front and rear rolls toward and from each other.

3. The combination with a vertically-movable upper roll and front and rear rolls, of idler-rollers 29 and rollers 30 by which the frontand rear rolls are supported, arms 31 and 32 by which rollers 30 are carried and which are provided with extensions 33 and cams 34 engaging said extensions whereby the arms may be oscillated to adjust the front and rear rolls.

4. In a hose-making machine, the combination with a vertically-movable upper roll, of front and rear rolls, fixed idler-rollers to support said rolls, movable idler-rollers to form additional supports for said rolls, means for adjusting said movable idler-rollers to change the relative positions of said front and rear rolls, and mechanism for driving said rolls in any position of adjustment.

5. In a hose-making machine, the combination with a vertically-movableupper roll, of front and rear rolls provided with drivingpinions, idler-rollers to support said rolls, additional supports for said rolls pivoted concentrically with said rollers, means for adjusting said supports to change the relative IIO and mounted concentrically with the arms and cams 34 engaging arms 31 and 32 whereby said arms may be oscillated to adjust the front and rear rolls in arcs of a circle.

7. The combination with a vertically-movable upper roll and front and rear rolls, of idler-rollers 29 upon which the front and rear rolls rest, T-shaped arms 31 and 32 pivoted concentrically with rollers 29, rollers 30 carried by said arms which also support the rolls, rollers 36 also carried by said arms and cams engaging rollers 36 whereby the arms are oscillated to adjust the front and rear rolls.

8. The combination with a vertically-movable upper roll andfront and rear rolls, of idler-rollers 29 and arms pivoted concentrically with said rollers, which support the rolls, cams engaging said arms by which the rolls are adjusted and means for locking said parts in position after adjustment.

5). The combination with a vertically-movable upper roll and front and rear rolls, of idler-rollers 2t) and arms pivoted concentrically with said rollers which support the rolls, cams engaging said arms, a shaft by which said cams are carried and which is provided with a crank 37 having a loop 39, an areshaped plate inclosed by said loop and a setscrew in the loop which engages the plates to lock the shaft and the parts which are adjusted by the cams thereon in position after adj ustment.

10. Inamachineof the character described the combination with a rear table, of an upper roll carried by said table and mechanism for raising and lowering said table and upper roll.

11. The combination with front and rear rolls, of a vertically-movable table carrying an upper roll. '12. The combination with front and rear rolls, of a vertically-movable rear table carrying an upper roll and a vertically-movable front table.

13. The combination with front and rear rolls and a table provided with brackets having heads 59, of a sectional upper roll carried by the heads on the brackets.

14. The combination with heads 59, of an upper roll having bearings in said heads, supplemental rolls also having bearings in said heads and antifriction-rollers lying between the bearings of the roll and the bearings of the supplemental rolls.

15. The combination with heads 50 having sockets 62 and slots 65, of an upper roll composed of sections, bearing-studs which turn in the heads and are rigidly secured to the sections, supplemental rolls lying in the sockets and having trunnions lying in the slots and antifriction-rollers lying between the trunnions and the bearingstuds, the relative diameters being such as to give the supplemental rolls the same surface speed as the sections so that in use the sections of the roll and the supplemental rolls form a continuous rolling surface.

1G. The combination with heads 59 having bosses (30, sockets 62 and slots 65, of an upper roll composed of sections having at their ends flanges which inclose the bosses, bearingstuds which turn in the heads and are rigidly secured to the sections, supplemental rolls lying in the sockets and having trnnnionslying in the slots and antifriction-rollers lying between the trunnions and the bearing-studs, substantially as described.

17. In a machine of the character described the combination with the rolls, of a verticallymovable front table.

18. The combination with front and rear rolls, of a vertically-movable upper roll and vertically-movable front and rear tables.

19. The combination with front, rear and upper rolls, of mechanism for adjusting the front and rear rolls in arcs of a circle, mechanism for raising and lowering the upper roll, front and rear tables and mechanism for raising and lowering said tables.

20. The combination with front and rear rolls, front and rear tables and an upper roll carried by the rear table, of mechanism for raising the rear table, then lowering it and then raising it again while the front table remains stationary and then lowering the rear table a second time and raising the front table until said tables are parallel with each other.

21. The combination with front and rear tables and sliding brackets by which the tables are supported, of cams 4S and 49 which engage the brackets and raise and lower the tables.

22. In a machine of the character described the combination with front and rear rolls, a top roll and a table by which the top roll is carried, of brackets which support said table and cams 49 engaging said brackets by which said table is raised and lowered twice during each rotation of the cams.

23. In a machine of the character described the combination with front and rear rolls, a top roll and a table by which the top roll is carried, of brackets which support said table and cams engaging said brackets, each cam having raised portions 49 and 49, rounded shoulders 49 and inclines 49, substantially as shown for the purpose specified.

24. The combination with front and rear rolls, an upper roll and sliding brackets by which the upper roll is carried, of cams 49 which engage the brackets and are provided with raised portions 49 by which the upper roll is raised to permit the insertion of a length of hose to be operated upon, further rotation of said cams causing the entire weight of the upper roll and the brackets to rest upon the hose, substantially as described.

25. The combination with front and rear rolls, mechanism for turning said rolls in the same direction, an upper roll and sliding brackets by which the upper roll is carried, ered independently of each other and meehto of cams 49 and mechanism for stopping and anism for stopping and starting the movestarting the rotation of said cams at any point ment of the cams.

of their rotation. In testimony whereof I affix my signature 26. The combination withfront and rear in presence of two Witnesses.

rolls, an upper roll, a rear table by which the BERNARD O. HALE.

upper roll is carried and a front table, of slid- \Vitnesses:

ing brackets by which said tables are carried, NORMAN P. KNIGHT,

cams by which said tables are raised and low- I FRANK E. HOADLEY.. 

